A.B.
Hi K.! Welcome to Louisville! I 'm familiar with all three neighborhoods and they are all extremely nice. My personal favorite it Glen Oaks - it's closer to Springhurst, which is very new and has about everything you need within 10 minutes. I go running through there regularly (I live in a neighborhood one streeet over) and it's family friendly - you see kids out playing and everyone's friendly and waves.
As for realtors, check out my realtor.. www.raycarterproperties.com. Most of his business is in the area you are looking at and he's very helpful.